smog

a form of air pollution that is or looks like a mixture of smoke and fog, especially in citiesattempts to reduce smog caused by traffic fumesMore Like ThisBlended or portmanteau wordsalcopop,breathalyser,bromance,brunch,chillax,chugger,docusoap,edutainment,greenwash,guesstimate,infomercial,mechatronics,metrosexual,mockney,motel,multiplex,pleather,podcast,robocall,simulcast,sitcom,smog,staycation,telethon,televangelist,workaholicSee worksheet.See related entries:Waste and pollutionWord Originearly 20th cent.: blend of smoke and fog.Extra examplesSmog levels are high today.a layer of smog over the citymeasures to reduce smogNowadays, smogs are very common in major cities.The city has had only limited success in reducing smog levels.The streets are clean, there’s no traffic, and there’s no smog to block out the sunshine.